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One of the more complex aspects of human behaviour is our universal ability to laugh. Laughter has puzzled behavioural biologists for many years because it is hard to imagine how this strange behaviour has evolved.

Why would laughing individuals be fitter in reproductive terms? And why is this ability is built-in, like sneezing, rather than something we learn, like hunting?

This entry was posted on Saturday, October 30th, 2010 at 08:19 and is filed under Think about it..
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